# Change SMTP Email Configuration Mautic 3.1.1 (Error 500) **URL:** \ **Category:** Product Support\ **Created:** [October 23, 2020, 2:01pm UTC](https://forum.mautic.org/t/change-smtp-email-configuration-mautic-3-1-1-error-500/16711 "2020-10-23T14:01:53Z")\ **Posts on this page:** 4\ **Page:** 1
**Author:** ![ravinbhutani](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.mautic.org/ravinbhutani/32/412_2.png) [@ravinbhutani](https://forum.mautic.org/u/ravinbhutani)\ **Post date:** [October 23, 2020, 2:01pm UTC](https://forum.mautic.org/t/change-smtp-email-configuration-mautic-3-1-1-error-500/16711/1 "2020-10-23T14:01:53Z")
I am trying to change SMTP In Configuration section. After a long _ **Please wait** _, screen goes dead with 500 Error. Though it will show connection: success, but when I press save or apply, it will give error. I am able to make other changes in configuration section. But that too takes a long time to execute. I think, there is some setting, in server which limits time for a command. If that command is not executed with in that time, say 30 seconds. It will kill this command and this 500 error will appear. Now I think, as execution of this command is taking too much time, so it returns 500 error. _First I can be wrong on this. Second, I am not an IT person, so do not know how to correct this thing._ **I found following error in /mautic/error\_log file** _(these error do not display in setting\>\>system info\>\>log)_ > [23-Oct-2020 02:18:28 Asia/Kolkata] PHP Warning: stream\_socket\_enable\_crypto(): Peer certificate CN=`smtp.elasticemail.com' did not match expected CN=`[smtp25.elasticemail.com](http://smtp25.elasticemail.com)’ in > > /home4/joylocxl/connect.joyloan.in/vendor/swiftmailer/swiftmailer/lib/classes/Swift/Transport/StreamBuffer.php on line 94 > > [23-Oct-2020 11:07:35 Asia/Kolkata] PHP Warning: stream\_socket\_enable\_crypto(): Peer certificate CN=`*.bigrock.com' did not match expected CN=`119.18.54.125’ in /home4/joylocxl/connect.joyloan.in/vendor/swiftmailer/swiftmailer/lib/classes/Swift/Transport/StreamBuffer.php on line 94 > > [23-Oct-2020 11:22:22 Asia/Kolkata] PHP Warning: stream\_socket\_enable\_crypto(): Peer certificate CN=`*.bigrock.com' did not match expected CN=`119.18.54.125’ in /home4/joylocxl/connect.joyloan.in/vendor/swiftmailer/swiftmailer/lib/classes/Swift/Transport/StreamBuffer.php on line 94 I have tried other solutions that are associated with Unable to save configuration 1. Clear cache by var/cache delete 2. Disabled wordfence 3. Adding htaccess file at root folder with: SecFilterEngine Off SecFilterScanPOST Off Please help me in this? ---
**Author:** ![ravinbhutani](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.mautic.org/ravinbhutani/32/412_2.png) [@ravinbhutani](https://forum.mautic.org/u/ravinbhutani)\ **Post date:** [October 29, 2020, 2:08pm UTC](https://forum.mautic.org/t/change-smtp-email-configuration-mautic-3-1-1-error-500/16711/2 "2020-10-29T14:08:41Z")
Some one please help me. I want to change SMTP server settings. But can’t get past this error ---
**Author:** ![EJL](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.mautic.org/ejl/32/12155_2.png) [@EJL](https://forum.mautic.org/u/EJL)\ **Post date:** [October 29, 2020, 3:46pm UTC](https://forum.mautic.org/t/change-smtp-email-configuration-mautic-3-1-1-error-500/16711/3 "2020-10-29T15:46:42Z")
If you are using an amazon product for mail I believe you select it as the mailer in settings, not enter credentials in “other smtp” ---
**Author:** ![devsrealm](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.mautic.org/devsrealm/32/3669_2.png) [@devsrealm](https://forum.mautic.org/u/devsrealm)\ **Post date:** [October 29, 2020, 5:21pm UTC](https://forum.mautic.org/t/change-smtp-email-configuration-mautic-3-1-1-error-500/16711/4 "2020-10-29T17:21:59Z")
Have you tried what @EJL suggested. If you don’t mind, could you try recording a video sneak peek of the error you are getting